Conan O’Brien will devote most of his TBS show Tuesday to guest Mel Brooks, who will conan logotalk about close friend Sid Caesar, who died this week at age 91. Brooks famously worked with Caesar on historically significant TV programs including NBC’s comedy series Your Show Of Shows, which aired in the early ’50s and boasted a writing staff that included Brooks, Neil Simon and Carl Reiner, among others. Conan boasts the youngest-skewing audience of the late-night talkers. Back in the fall of 2013, O’Brien did a Serious Jibber Jabber with Brooks about the latter’s long career in film and TV. Watch here: